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Vishay General Semiconductor - Diodes Division BZW04-273B-E3/54
- Part No.:
- BZW04-273B-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04-273B-E3/54.pdf
- Description:
- TVS DIODE 273VWM 438VC DO204AL
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
BZW04-273B-E3/54 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode in DO-41 package, designed for robust overvoltage protection of signal and power lines. It features a 273 V standoff voltage (VWM), 304–336 V breakdown voltage (VBR) at 1 mA, 438 V clamping voltage (VC) at 438 A peak pulse current, and 400 W peak pulse power rating with 10/1000 μs waveform - deployed in automotive sensor interfaces, industrial I/O modules, and telecom line protection.
For engineers reviewing the BZW04-273B-E3/54 datasheet, BZW04-273B-E3/54 pinout, BZW04-273B-E3/54 application, or BZW04-273B-E3/54 equivalent, this page delivers verified electrical parameters, DO-41 terminal mapping, AEC-Q101 qualification status, clamping performance under surge conditions, and direct alternatives for bidirectional high-voltage transient suppression.
Technical Context
This device operates as a voltage-clamped shunt protector: during transients exceeding VWM = 273 V, it avalanches symmetrically in both directions to clamp voltage at ≤438 V while diverting up to 438 A (10/1000 μs). Its glass-passivated junction ensures stable breakdown and low leakage (<0.9 μA at VWM), with thermal derating enabling reliable operation from –55 °C to +175 °C junction temperature.
Designed for repetitive surge immunity, it sustains 400 W peak pulse power at 0.01% duty cycle and meets JESD22-B106 solderability (275 °C, 10 s). The bidirectional symmetry eliminates polarity concerns in AC-coupled or floating lines, and its DO-41 mechanical form supports through-hole mounting in space-constrained industrial PCBs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 273 V - maximum continuous reverse operating voltage before conduction begins; defines safe operating margin for 240–277 VAC-derived rails or high-voltage DC bus monitoring. |
| VBR (min/max) | 304 V / 336 V at 1 mA - tight 10.5% tolerance ensures predictable turn-on across production lots and temperature; critical for coordinated protection staging. |
| VC @ IPPM | 438 V at 438 A - clamping voltage limits downstream IC stress during 10/1000 μs surges; enables protection of 400 V-rated MOSFETs or gate drivers. |
| PPPM | 400 W - peak pulse power handling capability per single transient event; validated per IEC 61000-4-5 Level 4 (4 kV) test conditions. |
| IPPM | 438 A - maximum non-repetitive surge current it can safely shunt without degradation; determines minimum series impedance required upstream. |
| TJmax | +175 °C - maximum junction temperature rating supports operation in under-hood automotive or enclosed industrial enclosures without forced cooling. |
| AEC-Q101 | Qualified - certified for automotive-grade reliability including HTOL, TC, and ESD testing; suitable for engine control, ADAS sensor front-ends, and body electronics. |
Pinout & Package
DO-41 (DO-204AL) axial-leaded package: molded epoxy body with matte tin-plated leads, UL 94 V-0 rated, lead length ≥1.0 inch (25.4 mm), diameter 0.107–0.160 inch (2.7–4.1 mm). No polarity marking - symmetrical bidirectional construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient current path | Both terminals function identically; no cathode band - enables blind insertion and eliminates orientation errors in automated assembly. |
| Lead 1 / Lead 2 | PCB mechanical anchor & thermal path | Leads conduct heat to board copper; 0.028–0.034 inch (0.71–0.86 mm) diameter supports 275 °C solder dip per JESD22-B106. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR over time and temperature; prevents parameter drift in humid or thermally cycling environments. |
| 400 W 10/1000 μs pulse rating | Validated for IEC 61000-4-5 surge immunity up to 4 kV open-circuit; supports industrial and automotive EMC compliance. |
| AEC-Q101 qualification | Meets automotive stress-test requirements including 1000-cycle temperature cycling and 1000-hour high-temp operating life. |
| Low leakage: ≤0.9 μA @ 273 V | Minimizes standby power loss in always-on systems (e.g., CAN bus nodes, remote sensors) without compromising protection threshold. |
| DO-41 mechanical robustness | Withstands >5 kgf axial pull force; UL 94 V-0 epoxy resists flame propagation in safety-critical enclosures. |
Applications
| Automotive Sensor Protection | Industrial PLC Analog Input |
|---|---|
|
Use Scenario: Protecting ABS wheel speed sensor signal lines from load dump and ISO 7637-2 pulses in 12 V/24 V vehicle architectures. IC Role / Device Role / Timing Role: Bidirectional shunt clamping element placed directly at connector entry point to limit transient voltage to <438 V before reaching signal conditioning op-amps or microcontroller ADC inputs. Use Value: Prevents latch-up or permanent damage to 5 V or 3.3 V analog front-ends during 100 V/100 ms load dump events, maintaining ASIL-B functional safety integrity. |
Use Scenario: Safeguarding 4–20 mA current loop inputs on programmable logic controller (PLC) modules exposed to field wiring surges in factory automation. IC Role / Device Role / Timing Role: High-voltage transient suppressor mounted across input terminals to clamp induced lightning or switching transients before they reach precision current-to-voltage conversion circuitry. Use Value: Enables uninterrupted operation under IEC 61000-4-4 EFT (4 kV) and IEC 61000-4-5 surge (2 kV differential) tests without recalibration or downtime. |
| Telecom Line Interface | Power Supply DC Bus Monitoring |
|
Use Scenario: Shielding RS-485 transceiver data lines in outdoor base station equipment against induced surges from nearby lightning strikes. IC Role / Device Role / Timing Role: Symmetric TVS placed across differential pair (A/B) to maintain common-mode rejection while limiting differential overvoltage to <438 V. Use Value: Preserves signal integrity and prevents transceiver latch-up during 10/1000 μs surges up to 4 kV, meeting GR-1089-CORE telecom immunity requirements. |
Use Scenario: Protecting voltage divider networks used to monitor 300–400 V DC bus in solar inverters or motor drives from switching transients and grid disturbances. IC Role / Device Role / Timing Role: High-VWM shunt protector placed across sensing resistors to prevent overvoltage damage to MCU ADC inputs during IGBT commutation spikes. Use Value: Maintains accurate bus voltage reporting during fast dV/dt events (≥1000 V/μs), avoiding false overvoltage trips and ensuring system uptime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ270CA | DO-214AA package; 270 V VWM, 299–331 V VBR, 438 V VC @ 438 A; same PPPM but surface-mount format. | Requires SMT reflow process and PCB real estate; unsuitable for through-hole legacy designs or high-vibration mechanical retention. | Select when board space is constrained and automated SMT assembly is available; verify thermal pad layout for 1.5 W steady-state dissipation. |
| P6SMB270A | DO-214AA package; 270 V VWM, 300–332 V VBR, 438 V VC @ 438 A; identical electrical specs but commercial-grade (non-AEC-Q101). | Lacks automotive qualification; not approved for under-hood or safety-critical vehicle subsystems. | Acceptable for industrial or consumer applications where AEC-Q101 is not mandated; lower cost but requires separate reliability validation. |
Compared with BZW04-273B-E3/54, SMBJ270CA offers identical clamping and power ratings in a compact SMT package but sacrifices mechanical ruggedness and through-hole compatibility; P6SMB270A matches key electricals but omits AEC-Q101 certification, limiting use to non-automotive environments where qualification overhead is unnecessary.
Availability
BZW04-273B-E3/54 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC analog input circuits, telecom line interface designs, and power supply DC bus monitoring requiring stable component supply and long-term lifecycle support.
Supply support for BZW04-273B-E3/54 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in high-reliability diodes, MOSFETs, optoelectronics, and passive components for demanding industrial and automotive applications.
The BZW04 series belongs to Vishay's TRANSZORB® TVS family, engineered specifically for high-energy transient suppression in harsh environments - emphasizing AEC-Q101 compliance, tight VBR tolerance, and robust DO-41 mechanical construction.
FAQ
What is the clamping voltage of BZW04-273B-E3/54 and how is it measured?
The clamping voltage (VC) of BZW04-273B-E3/54 is 438 V, measured at a peak pulse current (IPPM) of 438 A using the standardized 10/1000 μs double-exponential surge waveform per IEC 61000-4-5. This value represents the maximum voltage that appears across the device terminals during a surge event, directly limiting stress on downstream components. BZW04-273B-E3/54 maintains this clamping performance consistently due to its glass-passivated junction and low incremental surge resistance.
Is BZW04-273B-E3/54 suitable for automotive applications?
Yes, BZW04-273B-E3/54 is AEC-Q101 qualified, having passed rigorous automotive reliability tests including high-temperature operating life, temperature cycling, and electrostatic discharge. Its DO-41 package, 175 °C max junction temperature, and stable 273 V standoff voltage make it appropriate for engine control units, ADAS sensor interfaces, and body electronics where transient immunity and long-term reliability are mandatory. BZW04-273B-E3/54 meets these requirements without derating in typical under-hood thermal profiles.
How does the bidirectional design of BZW04-273B-E3/54 affect its installation?
The bidirectional design of BZW04-273B-E3/54 means it has no polarity marking - both leads are functionally identical and interchangeable. This eliminates orientation errors during manual or automated assembly and simplifies layout for AC-coupled or floating signal lines. Unlike unidirectional TVS diodes, BZW04-273B-E3/54 provides symmetrical clamping in either direction, making it ideal for protecting differential pairs, transformer-coupled interfaces, or any circuit where voltage reversal may occur. No cathode band is present on BZW04-273B-E3/54.
What is the maximum leakage current of BZW04-273B-E3/54 at its standoff voltage?
The maximum reverse leakage current (ID) of BZW04-273B-E3/54 is 0.90 μA at its 273 V standoff voltage (VWM) and 25 °C ambient temperature. This ultra-low leakage minimizes power loss in always-on systems such as battery-backed sensors or continuously monitored industrial control loops. The value is guaranteed per datasheet Table "ELECTRICAL CHARACTERISTICS" and remains stable across temperature due to the device's glass-passivated junction structure. BZW04-273B-E3/54 maintains this specification without degradation under rated operating conditions.
Can BZW04-273B-E3/54 be used in place of a unidirectional TVS diode?
No - BZW04-273B-E3/54 is strictly bidirectional and cannot replace a unidirectional TVS diode in circuits requiring forward conduction or DC bias blocking in one direction only. Its symmetrical V-I curve means it conducts equally in both polarities once VBR is exceeded, making it unsuitable for protecting DC power rails where reverse polarity protection is needed. For such cases, a unidirectional part like BZW04-273-E3/54 (without 'B' suffix) must be selected. BZW04-273B-E3/54 is purpose-built for AC, differential, or floating node protection.
BZW04-273B-E3/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AL, DO-41, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 273V
- Voltage - Breakdown (Min):
- 304V
- Voltage - Clamping (Max) @ Ipp:
- 438V
- Current - Peak Pulse (10/1000µs):
- 900mA
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
BZW04-273B-E3/54 FAQ
1.How can I place an order for BZW04-273B-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04-273B-E3/54 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for BZW04-273B-E3/54 reliable?
The price and inventory of BZW04-273B-E3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW04-273B-E3/54 is usually 5 days.
3.What payment methods are accepted for BZW04-273B-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04-273B-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04-273B-E3/54?
BZW04-273B-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04-273B-E3/54 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for BZW04-273B-E3/54?
For technical support, including BZW04-273B-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04-273B-E3/54 requirements.
6.How does Aetrix verify that BZW04-273B-E3/54 is sourced from the original manufacturer or authorized distributors?
All BZW04-273B-E3/54 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that BZW04-273B-E3/54 meets industry standards.
7.What is the process for return or replacement of BZW04-273B-E3/54?
All BZW04-273B-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04-273B-E3/54, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The BZW04-273B-E3/54 part is unused and in its original packaging.
Return procedure for BZW04-273B-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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